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DISODIUM SUCCINATE CAS N°: 150-90-3

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OECD SIDS<br />

<strong>DISODIUM</strong> <strong>SUCCINATE</strong><br />

3 HUMAN HEALTH HAZARDS<br />

3.1 Effects on Human Health<br />

Many toxicity studies were conducted using disodium succinate hexahydrate (CAC No. 6106-21-4),<br />

because there should be no difference between disodium succinate and disodium succinate<br />

hexahydrate in mammalian toxicity.<br />

Disodium succinate (<strong>CAS</strong> No. <strong>150</strong>-<strong>90</strong>-3) and disodium succinate hexahydrate (<strong>CAS</strong> No. 6106-21-<br />

4) were assessed. The NOAEL of disodium succinate hexahydrate was converted into the NOAEL<br />

of disodium succinate based on the molecular weights of each chemical.<br />

3.1.1 Toxicokinetics, Metabolism and Distribution<br />

There is no data available.<br />

3.1.2 Acute Toxicity<br />

Studies in Animals<br />

An acute toxicity study in rats was identified as a key study because it was well conducted<br />

according to an OECD acute oral toxicity test guideline [TG 401] [MHLW, Japan: 2002] under<br />

GLP (Table 2).<br />

In this study, Crj:CD (SD) rats (five animals/sex/group) were administered disodium succinate<br />

hexahydrate by gavage at a single dose of 0 (vehicle: distilled water) or 2,000 mg/kg bw. No deaths<br />

or abnormal findings were found in any groups. There was no difference in body weight gain<br />

between groups. The oral LD 50 value was considered to be greater than 2,000 mg/kg bw in male<br />

and female rats (2,000 mg of disodium succinate hexahydrate is equivalent to 1,200 mg of disodium<br />

succinate ).<br />

Table 2: Acute toxicity of disodium succinate in rodents<br />

Route Animals Type Values References<br />

Oral Rat LD 50 > 2,000 mg/kg bw (disodium succinate hexahydrate)<br />

> 1,200 mg/kg bw (disodium succinate) MHLW, Japan: 2002<br />

Studies in Humans<br />

There is no available information on humans.<br />

Conclusion<br />

The oral LD 50 value was considered to be greater than 2,000 mg/kg bw in male and female rats<br />

(2,000 mg of disodium succinate hexahydrate is equivalent to 1,200 mg of disodium succinate ).<br />

3.1.3 Repeated Dose Toxicity<br />

Studies in Animals<br />

One study is available for repeated dose toxicity. This study was conducted according to an OECD<br />

combined repeated dose toxicity study with the reproduction/developmental toxicity screening test<br />

guideline [TG 422] [MHLW, Japan, 2002] under GLP. This study was identified as a key study<br />

because it was well conducted. The details of this study are as follows.<br />

8<br />

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